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Altera_Forum
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8 years ago

Floating Point multiplication problem!

Hello! I'm trying to mult 10-bit bus with floating point constant 0.5. To do this I am using a IP FP arithmetic blocks. First - conversion 10 bit bus to 32 float, then - multiplication block (3...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

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I think thats may be a good idea, but I dont know how to do this. I'am a newbie. Can I do this with IP cores from Quartus?

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to multiply by fraction you scale say by 2^10 then discard 10 lsb fro result, e.g.

0.13 => round(0.13 x 2^10) = 133

In FPGA, you multiply input by 133 then discard 10 lsbs